Feed-water heater.



R. D. SIN-GER & F. DULLI.

FEED WATER HEATER.

APPLICATION FILED MAR.14,1914.

Patented Nov. 10, 1914.

fiober/ [7. Sm er Fre dric/r D a///' Inventors Sec /? fie/w ey Witness'e WISE M41 UNITED STATES PATENT OFFICE.

ROBERT D. SINGER AND FBEDRICK DULLI, OF HAMILTON, OHIO, ASSIGNOBS I ABRAHAM IBALLIHG'ER, OI" KAMILTOH, OHIO.

FEED-WATER HEATER.

Specification 01 Letters Patent, Application filed March 14, 1914. SerlaINo. 824,808;

States, residing at Hamilton, Butler countyi Ohio, have invented certain new and use-fu Improvements in Feed-Water Heaters, of

- which the following isa specification.

'20 stood from the following This invention concerns itself with a heater for dealing with the feed water of a steam boiler and has been designed primarily as an auxiliary heater to serve in connection with a feed water heater of ordinary type in which the cold water is raised in temperature by beingsubjected" to the heating effect of exhaust steam before being forced into the boiler, our water heater, when employed in this auxiliary manner being disposed between the pump or injector and the boiler. r

Our improvements will be readily. underdescription taken in connection with the accompanying drawin}; in which Figure 1 is a vertical diametrical section of our improved water heater; and Fig. 2 an elevation of the same, on a much smaller scale, and shown in connection with a mixing coil.

In the drawing :--1,*indicates a waterchamber formed withina cast body; 2, a

Y water-inlet to this chamber, this water-inlet passageway through a the two '0 ambers in -endwise motion;

end of the steam-tube 1n communicatlon with 5 steam-chamber being designed for connection with the dis charge pipe of the feed pump or injector which is to force the waterinto the boiler; 3 a mixlug-chamber in alinement withchamber 1; 4, a water-outlet from the mixing-chamber, this outlet being designed for connection with piping leading to the boiler into which the eed water is to be forced'by the pump( or injector; 5, a diaphragm separating water chamber 1 from mixing chamber 3; 6, a the diaphragmplacing communication with each other; 7, a steam-chamber in alinement with the water-chamber andmixing-chamber; 8, a steam-inlet to this steam-chamber, this inlet being designed to connect with piping leading from the steam'space of the oiler; 9, a steam-tube, closed at its upper its lower end, and arranged in the common axis of the three chambers, this steam-tube being capable of rotary and 10, ports placing the upper end and open at 7 ll, a valve formed by the apparatus in connectlon with the .termined small quantities,

lower end of the steam-tube and adapted to coiiperate with a proper seat in diaphragm 5; 12, a screwed connection between the steam-tube and the eneral structure to perm 1t of the steam-tn e being adjusted end- WlSe relative to the valve. seat at its lower end; 13, a nozzle projecting from the lower end of the steam-tube and entering passage 6 but with such degree of looseness as will at all times form an annular steam passage around the nozzle; 14, a hand wheel on the upper end of a stem projecting upwardly from the steam-tube; and 15, a pipe coi connected with the water-outlet 4 and forming a portion of the pipe system lacing the supplied with water;

' the steam-tube is screwed down so as to close valve 11 then no water can be pumped through the apparatus, though steam may flow through the steam-tube but, being taken from the boiler being fed, it

, will have insuflicient pressure to open the usual check valve disposed between the boiler andthe water feedlng apparatus. But if the steam-tube be screwed u wardly somewhat then a water passage W]. 1 be provided at valve 11, and water from the pump .or

in'ector will'pass into passageway 6 andbe joined by the steam from the steam-tube and enter mixingchamber 3 and go thence to the boiler, the water in its passage taking up heat from the steam and having its temperature raised-accordingly and,'while the heat thus taken from the admitted steam is derived from the boiler, it is received b the water under such conditions as to bring about a material advantage, as has been de practical tests. The water passya 11 may be in comparativel v as determined by the a justment of the valve, and the pump or inector should? be slowed accordingly,'though inmany practical installations the rate of ing the va water deliverywill' regulate itself in accordance with the resistance ofiered at valve ll. The relationship of the volumes of, water and steamentermg the mixing-chamber may be adjusted to be such that the steam strikes the water while the water is inthe form of an annular film, believed to be the best condition for the transfer of heat, and it is believed that to this is due the fact that a given number of heat units is absorbed more advantageously by .the feed water before it Patented Nov. 10, 1914.

oiler to be I pipe between the adapted to enters the boiler than would be absorbed from the fire by a large body of waterin the boiler.

The jet of steam flowing into passage 6 within the incoming annulus of water might be thought to act after the manner of an injector, but this thou ht loses its weight when it is considered that the'water' entering passage 6 is forced thereinto by the pump or injector at a pressure necessarily greater than that in the boiler, so that the annulus of water has a pressure equal to and generally greater than that of the/jet 'of steam. It has been our thought that the steam and water would in the mixing-chamber and result in the condensation of the steam into the water and the raising of the temperature of the water. And this we believe to be the case if .the mixing-chamber is large enou h, but we have found that an increase in et ciency' is obtained by virtually enlarging this chamber. This might, of course, be done, by simply enlarging the mixing-chamber, but in practice we have found satisfactor results to flow from adding coil 15, of arge boiler, this coil virtually adding to the volume of the mixing-chamber so that in case the condensation iof the steam is not perfected within the mixing-chamber it will be done in the coil.

We claim 1. A feed water chamber-structure containing a water-chainber, 21 water-inlet'thereto adapted for .receiving water to be .forced into the waterchamber by a'pump or injector, a mixingchamber, a partition separating the mixingchan iber fromth'e Water-chamber, a assageway through the partition, an out et from the mixing-chamber adapted for connection with a boiler, a steam-chamber, a steam-inlet admit steam from the boiler to the steam-chamber, a steam-tube passing from the steam-chamber through the waterchamber, a valve formed on-. an end of the steam-tube-and adapted to cooperate with a seat formed in said partition, "ports in the steam-tube at the steam-chamber, and means for adjusting the steam-tube .endwise to regulate the degree of opening of said valve, combined substantially as set forth.

be thoroughly mixed mixing-chamber and the with a boi heater comprising a 2. A .feed water heater comprising. a chamber-structure containing a water-chamber, a. water-inlet J thereto adapted for receiving water to be forced into the waterchamber by a pump or injector, a mixingchamber, a partition separating the mixingchamber from the water-chamber, a passage-way throu let from the mixing-chamber adapted for gonnection with a boiler, a, steam-chamer, from the boiler to the steam-chamber -a steam-tube passing from the steam-chamber through the water-chamber, a valve formed on an end of the steam-tube and ada tedto cooperate with a seat formed in sai partition, ports in the steam-tube at the steamchamber, means for adjusting the steamtube endwise to regulate the degree of opening of said valve, and a pipe coil connected with the outlet from the mixing-chamber,

combined substantially as set forth.

3. A feed water heater comprising a chamber-structure containing a water-chamber, a water-inlet thereto adapted for receiving water to be forced intothe waterchamber by a pump orejector, a mixingchamber, a partition separating the mixinggh the partition, an outchamber from the water-chamber, a passageway through the partition, an outlet from the mixin -chamber adapted for connection er, a steam-chamber, a steam-inlet adapted to admit steam from the boiler to the steam-chamber, a steam-tube passing from the steam-chamber through the waterchamber, a valve formed on an end of the steam-tube and adapted to cooperate with a seat formed in said partition, ports in the steam-tube at the steam-chamber, a threaded connection between the steam-tube and the chamber-structure to ment of the steam-tube endwise to regulate the degree of opening of said valve, a stem connected with the steam-tube and projecting outside the 'cl1amberstructure, and a handle for turning stantially as set forth.

ROBERT D. SINGER. FREDRICK DULLI.

Witnesses:

M. S. BELDEN, GEO. JOHNSON.

said stein, combined subpermit of the adjust- 

